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Title: Precision tests of Einstein's weak equivalence principle for antimatter

Abstract

Einstein's Weak Equivalence Principle (WEP) states that gravitational mass is identical to inertial mass. This hypothesis has withstood experimental tests to an impressive accuracy of one part in one hundred billion. Various hypotheses based on theory and observations with matter suggest violations of WEP for antimatter may exist anywhere from the one part per million to the 200% level. An observed violation at any level would have a profound impact, e.g. it would offer an explanation of why matter and antimatter are so distinctly separated in the Cosmos. We propose a precise test of WEP for antiprotons in microgravity. We expect to test WEP for antimatter to about one part per million, and foresee that additional advancements of several orders of magnitude in precision could follow with further technical developments.

Authors:
; ; ;  [1]
  1. Pennsylvania State University, 303 Osmond Laboratory, University Park, Pennsylvania 16802 (United States)
Publication Date:
OSTI Identifier:
21179675
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 420; Journal Issue: 1; Conference: STAIF-1998: Space technology and applications international forum - 1998, Albuquerque, NM (United States), 25-29 Jan 1998; Other Information: DOI: 10.1063/1.54770; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCURACY; ANTIPROTONS; EQUIVALENCE PRINCIPLE; GENERAL RELATIVITY THEORY; HYPOTHESIS; LIMITING VALUES; MASS; MASS DIFFERENCE; SENSITIVITY; SPACE VEHICLES; TESTING; TRAPS; UNIVERSE; WEIGHTLESSNESS

Citation Formats

Lewis, R A, Smith, G A, Huber, F M, Messerschmid, E W, and Space Systems Institute, University of Stuttgart, Pfaffenwaldring 31, 70550 Stuttgart. Precision tests of Einstein's weak equivalence principle for antimatter. United States: N. p., 1998. Web. doi:10.1063/1.54770.
Lewis, R A, Smith, G A, Huber, F M, Messerschmid, E W, & Space Systems Institute, University of Stuttgart, Pfaffenwaldring 31, 70550 Stuttgart. Precision tests of Einstein's weak equivalence principle for antimatter. United States. doi:10.1063/1.54770.
Lewis, R A, Smith, G A, Huber, F M, Messerschmid, E W, and Space Systems Institute, University of Stuttgart, Pfaffenwaldring 31, 70550 Stuttgart. Thu . "Precision tests of Einstein's weak equivalence principle for antimatter". United States. doi:10.1063/1.54770.
@article{osti_21179675,
title = {Precision tests of Einstein's weak equivalence principle for antimatter},
author = {Lewis, R A and Smith, G A and Huber, F M and Messerschmid, E W and Space Systems Institute, University of Stuttgart, Pfaffenwaldring 31, 70550 Stuttgart},
abstractNote = {Einstein's Weak Equivalence Principle (WEP) states that gravitational mass is identical to inertial mass. This hypothesis has withstood experimental tests to an impressive accuracy of one part in one hundred billion. Various hypotheses based on theory and observations with matter suggest violations of WEP for antimatter may exist anywhere from the one part per million to the 200% level. An observed violation at any level would have a profound impact, e.g. it would offer an explanation of why matter and antimatter are so distinctly separated in the Cosmos. We propose a precise test of WEP for antiprotons in microgravity. We expect to test WEP for antimatter to about one part per million, and foresee that additional advancements of several orders of magnitude in precision could follow with further technical developments.},
doi = {10.1063/1.54770},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 420,
place = {United States},
year = {1998},
month = {1}
}